Question

using a horizontal force of 200 Newton we intend to move a wooden cabinet across a floor at a constant velocity what is the friction force that will be exerted on the cabinet​

Answer 1

Answer:

The frictional force will also be 200N

Explanation:

Let horizontal force be F, frictional force be ƒ

The velocity is constant so the body will have a = 0 m/s^2

Imagine the body is being pulled in the right direction, therefore the frictional force will be in the left direction.

Therefore, according to Newton's second law of motion (F = ma)

F - ƒ (because they are opposite) = ma

a=0

F = ƒ

therefore, ƒ = 200N

Answer 2

Answer:

Since the wooden cabinet is to be moved at constant velocity, this means that the whole force of 200 N will be used to overcome the force of friction. Thus, the force of friction exerted on the cabinet will be equal to the force applied, which is 200 N.